Scrooge McDuck (voiced by Alan Young in the 1987 series, David Tennant in the 2017 series) is the richest duck in the world and the main protagonist of the series. Scrooge is constantly seeking ways to further increase his wealth (his favorite pastime appears to be treasure hunting), and to avoid losing it. He was a self-made billionaire when he left Scotland and came to America with his Number One Dime, eventually establishing his home in McDuck Manor and erecting his famous "Money Bin". In the original 1987 series, he sports a blue jacket with red cuffs and a red collar.

For the 2017 reboot, Scrooge's background is slightly different. He is well known as a seasoned "adventure-capitalist", who used to conduct adventures with his nephew Donald joining him. However an incident occurred that led to an estrangement between the pair and Scrooge losing the spark for adventure. Ten years after this incident, Scrooge regains this spark when he is reunited with Donald and introduced to his grand-nephews for the first time. The reboot sees him wearing a red jacket with visible pockets and black cuffs and collar, as per his comic book appearance.

Huey, Dewey, and Louie (voiced by Russi Taylor in the 1987 series, Danny Pudi, Ben Schwartz and Bobby Moynihan respectively in the 2017 series) are triplets of Della Duck, the nephews of Donald Duck, and the grand-nephews of Scrooge McDuck. All three tend to be playful and mischievous, while also being devoted members of the Junior Woodchucks scouts. In the original 1987 series, the triplets are sent to Scrooge to stay with him, while their uncle leaves to join the navy. All three are identical in appearance and personality, and wear identical outfits - a cap and jumper- with the only difference between each of them being the color of their clothing - Huey wears red, Dewey wears blue, and Louie wears green. The introduction of this scheme by DuckTales was adapted for later use in future animations that featured the triplets.

For the 2017 reboot, Huey, Dewey and Louie were given distinct appearances, voices and personalities - Huey is the eldest of the triplets and the smartest of the group, wearing a red short-sleeved shirt and cap; Dewey is the most adventurous, and wears a blue long-sleeved T-shirt; and Louie is the youngest of the trio and the most easygoing, who wears a green hooded top. Although all three are mischievous and sneaky around Donald, they are wide-eyed admirers of Scrooge's fortune and the legends of his adventures. Initially, the trio are sent to stay with Scrooge while Donald attends a job interview during the premiere episode, but after renewing his spirit for adventure (and Dewey accidentally wrecking their houseboat), the trio and Donald move in with him and accompany him on his new adventures.

Webbigail "Webby" Vanderquack (voiced by Russi Taylor in the 1987 series, Kate Micucci in the 2017 series) is the granddaughter of Mrs. Beakley. In the original 1987 series, she was typically wearing a pink shirt and a large hairbow, usually timid, and often had difficulty being accepted by Scrooge's grand-nephews at first before they accepted her as an adopted sister of theirs.[2]

In the 2017 reboot, Webby is slightly older and smarter, with her character wearing a pink and blue sweater vest, a purple skirt, and a smaller hairbow on her right-side, while she is revealed to be an enthusiastic adventure fan and Clan McDuck historian who idolizes Donald Duck as one of the greatest adventurers of all time.[3] The nephews find her slightly intimidating upon their first meeting, but soon accept her as a close new friend.[4][5]

Launchpad McQuack (voiced by Terry McGovern in the 1987 series, Beck Bennett in the 2017 series) is Scrooge's pilot, who is an able flyer, but is somewhat incompetent and rarely ever lands a plane safely, usually crashing them and walking away without injury. In the original 1987 series he uses the motto "If it has wings, I can crash it", and revealed in later episodes to be of Irish descent and having an ancestor who was involved in the Civil War. His physical appearance is somewhat heroic, with his clothing being similar to that of early era pilots, including a leather cap with flight goggles, an aviation scarf, and a brown flight jacket with light brown pants. The character later appeared as a main character in Disney's Darkwing Duck, appearing in most episodes of that series.

For the 2017 reboot, Launchpad works for Scrooge as his limo driver to begin with, before being placed in charge of piloting various craft besides planes. While his physical appearance is the same as his 1987 counterpart, he wears an outfit resembling that of private commercial pilots from the 40s/50s, including a baseball cap, a leather jacket with a fur lined collar, a green undershirt, and white slacks.

Mrs. Bentina Beakley (voiced by Joan Gerber in the 1987 series, Wendee Lee in DuckTales: Remastered and Toks Olagundoye in the 2017 series) is the maid and nanny of the household, and the maternal grandmother of Webby. In the original 1987 series, she is shown as gentler and sweet on her granddaughter, while wearing a purple dress and large white apron over her front and having two hair pins to maintain her hairstyle. In the episode "Jungle Duck," it is revealed that Mrs. Beakley used to be a nanny for a younger Lord Graydrake.

In the 2017 reboot, her character is more down-to-earth than the other residents of McDuck Manor, often offering advice to Scrooge and the children, though takes offense at being treated as her employer's secretary. Her physical appearance is similar to her 1987 counterpart, though she has no hair pins, while she wears clothing similar to a nanny, and has an apron around her waist. In the premiere episode, she is protective of Webby, but later agrees to let her be a part of Scrooge's adventures towards the end of the episode.

Donald Duck (voiced by Tony Anselmo in both series) is a classic Disney character, whose appearance in the original 1987 series was deliberately downplayed due to his time in the animation spotlight, in order to give more focus to Scrooge and the boys.[6][7] In the original series, he leaves his nephews with Scrooge in order to serve with the Navy,[8] whereupon he makes occasional appearances as a guest character in some episodes, while in others he is mentioned via mail and pictures he sends to Scrooge and his nephews. He doesn't make any appearances after the first season.

For the 2017 reboot, Donald's appearance is significantly increased to involve him in the adventures of Scrooge and his nephews, which included changing a part of the background between him and his uncle. In the reboot, he and Scrooge used to adventure together, until an incident occurred that caused them to drift apart and not speak to each other for ten years. After Donald discovers his nephews plan to be alone to cause some mischief with their houseboat, Donald reluctantly reunites with Scrooge in order to get him to babysit his nephews. After a mishap leads him to becoming involved in a new adventure with Scrooge (and losing him his houseboat), Donald agrees to move in his family to McDuck Manor while still trying to maintain his independence. In addition to increasing his appearance in the cartoon, the reboot also sees him wearing a black sailor suit that he wears in many of the classic Donald Duck and Uncle Scrooge comics that the show is built upon.

Gyro Gearloose (voiced by Hal Smith in the 1987 series, Chris Edgerly in DuckTales: Remastered, Jim Rash in the 2017 series) - Gyro Gearloose is a mild-mannered, although somewhat absent minded, inventor who often works for Scrooge, designing anything from relocation rays ("The Money Vanishes") to time machines ("Time is Money").[9][10] Despite being duped once in a while by the Beagle Boys, Gyro is generally extremely clever and resourceful. Often his inventions help drive an episode's plot, as they do not always work as designed, usually when anyone besides Gyro attempts to use them.
In the 2017 series, debuting in the episode ""The Great Dime Chase!",[11] the somewhat arrogant and rather impatient Gyro is employed by Scrooge as his head of Research and Development, working in a secret lab under the Money Bin.

Little Bulb - Little Bulb is an invention of Gyro; a small (non-speaking) humanoid robot with a lightbulb for a head. In the original comic books he is named Little Helper.

Fenton Crackshell (1987) or Fenton Crackshell-Cabrera (2017), a.k.a. Gizmoduck (voiced by Hamilton Camp in the 1987 series, Eric Bauza in DuckTales: Remastered, Lin-Manuel Miranda in the 2017 series) - Fenton Crackshell is Scrooge's accountant (as himself) and personal bodyguard (as Gizmoduck), hired by Scrooge in the 1987 show's second season.[12][13] He can count at a blazing speed, but he generally is incompetent with almost everything else. Furthermore, his regular dogged attempts to rectify his mistakes tends to make things worse until he ultimately succeeds. He exhibits a remarkably different personality in his role as Gizmoduck, as his high-powered suit gives him courage to make daring decisions and act as a strong leader and a hero. He makes a few guest appearances in Darkwing Duck.[14][15][16][17][18]
In the 2017 series, he is re-imagined as a Latin American intern working under Gyro Gearloose.[19]

Goldie O'Gilt, a.k.a. Glittering Goldie (voiced by Joan Gerber in the 1987 series, Allison Janney in the 2017 series) - Goldie O'Gilt is Scrooge's love interest. An original Carl Barks character from the comic book story "Back to the Klondike" who first appears in the 1987 series episode of the same name. Goldie's origins are as a music hall singer in Dawson.[20] She reappears in the episodes "Scroogerello",[21]"'Till Nephews Do Us Part",[22] and "Ducky Mountain High".[23] She is due to recur on the 2017 series.[24]

Gladstone Gander (voiced by Rob Paulsen in the 1987 series, Paul F. Tompkins in the 2017 series) - Gladstone Gander is Donald Duck's cousin, appearing in the episodes "Dime Enough for Luck"[25] and "Dr. Jekyll & Mr. McDuck"[26] of the 1987 series. Much to his relatives' annoyance, he is unfailingly lucky. In the 2017 series he is introduced in the episode "The House of the Lucky Gander!",[27] living in the Macau-like city Macaw where he was a prisoner of Toad Liu Hai until Scrooge McDuck found a way to free him.

Professor Ludwig Von Drake (voiced by Corey Burton in both series) is Donald's uncle, as well as a scientist and self-proclaimed universal expert, appearing in several Disney Animation productions. He only makes one appearance in the 1987 series, as a psychiatrist in the episode "The Golden Fleecing",[28] but is due to be a recurring character in the 2017 series.[24]

Mrs. Featherby (1987) or Mrs. Quackfaster (2017) (voiced alternately by Joan Gerber, Tress MacNeille, Susan Blu and June Foray in the 1987 series, Susanne Blakeslee in the 2017 series) - Mrs. Featherby is Scrooge's secretary. In the original comic books, she is named Miss Quackfaster. In the 1987 series she appeared in the episodes "Dinosaur Ducks",[29] "Blue Collar Scrooge",[30] and "Yuppy Ducks",[31] as well as in the film DuckTales the Movie: Treasure of the Lost Lamp.
In the 2017 series, debuting in the episode "The Great Dime Chase!",[11] she is the archivist of Scrooge's personal archive, having served him for the last 50 years. Dedicated to the point of obsession, she is perfectly willing to terrorize the children if they refuse to heed her bizarre set of rules.

Downy (voiced by June Foray in the 1987 series) and Fergus McDuck (voiced by Don Messick in the 1987 series, Graham McTavish in the 2017 series[32]) - Downy and Fergus are Scrooge McDuck's parents. In the 1987 series they are simply referred to as MacMama and MacPapa, appearing in flashbacks in the episode "Once Upon a Dime",[33] were they are shown living as farmers in a small cottage. Scrooge's father is also alluded to in the episode "The Curse of Castle McDuck".[34]
Initially in the 2017 series, they only appear in portraits at McDuck Manor.[35]

Duckworth the Butler (voiced by Chuck McCann) - Duckworth is Scrooge's longtime, no-nonsense butler-chauffeur, the a jack-of-all-trades of McDuck Manor, and an important member of Scrooge's staff. He worked for Scrooge even before the nephews moved in, and was Scrooge's only household servant until the hiring of Mrs. Beakley. Despite having "Duck" in his name, he is actually an anthropomorphicdog. He first appears in the first part of the pilot episode,[8] and appears as a supporting character throughout the series, with his only starring roles occurring in the episode "Duckworth's Revolt"[36] and the episode-segment "Take Me Out of the Ballgame".[37]

Admiral Grimitz (voiced by Peter Cullen impersonating John Wayne) - Admiral Grimitz is the navy commander on the aircraft carrier that Donald is a midshipman on. He always gets annoyed at Donald's accident-prone stunts, and likes to play with military equipment that makes things "go ka-blooey". His name is a spoof of Admiral Chester W. Nimitz. His makes several appearances during the show's first season, debuting in the first part of the pilot episode.[8]

Doofus Drake (voiced by Brian Cummings) - Doofus Drake is a friend of Huey, Dewey, and Louie, a devoted Junior Woodchuck scout, and Launchpad's sidekick. Generally speaking, Doofus is a rather dim-witted and clumsy character, with a positive attitude as insatiable as his appetite. He exhibits hero worship for Launchpad, which frequently borders on the delusional (the relationship between Doofus and Launchpad in many ways mirrors that of Launchpad and Scrooge). Doofus is also marked by his strong moral compass, best demonstrated in the episode "Superdoo!", in which he uses newly acquired superpowers to save the Junior Woodchucks from catastrophe only to voluntarily relinquish them for the sake of hard work and friendship. He debutes in the episode "Where No Duck Has Gone Before" and doesn't appear after the first season.[38]

Bubba the Caveduck (voiced by Frank Welker) - Bubba is a young caveduck that Scrooge adopts after he stowed away in Gyro's Time Machine, the Millennium Shortcut. He first appears in the five-part episode "Time Is Money", which opens the second season of the show.[9] To accommodate Bubba, Scrooge McDuck built a replica of his cave and habitat on his property.

Mrs. Crackshell (voiced by Kathleen Freeman) - Mrs. Crackshell is Fenton's couch-potato mother. She first appeared in the episode "Super DuckTales, Part 1: Liquid Assets".[12]

Gandra Dee (voiced by Miriam Flynn) - Ganda Dee is Fenton's girlfriend. Her name is a pun on the actress Sandra Dee. Following her introduction in the five-part episode "Super DuckTales",[12] she reappered in "Metal Attraction",[39] "The Big Flub",[40] and "The Duck Who Knew Too Much".[41]

Bentley Buzzard (voiced by Marc Evan Jackson) - Bentley Buzzard is the president of Scrooge's board of directors, first appearing in the two-part pilot, "Woo-oo!".[35] He typically attempts to convince Scrooge that they have to cut spending in areas that he and the other board members regard as impractical.

Roxanne Featherly (voiced by Kari Wahlgren) - Roxanne Featherly is a green-feathered duck working as a news reporter in Duckburg, first appearing in "Woo-oo!".[35]

Lena LeStrange[42] (voiced by Kimiko Glenn) - Lena LeStrange first appears in the episode "The Beagle Birthday Massacre!" as a well-traveled teen who befriends Webby.[43] She is later revealed to be the niece of Magica De Spell.

Mark Beaks (voiced by Josh Brener) - Mark Beaks is an African grey parrot[44] who is the young tech industry billionaire and CEO of Waddle. He cares more about his own image and popularity than his fortune where he has many followers on social media as well as back-up phones if any one of them gets destroyed. Debuting in "The Infernal Internship of Mark Beaks!," he takes on Huey and Dewey as interns while Scrooge McDuck and Flintheart Glomgold get annoyed with their new competitor. During this time, Falcon Graves invades Waddle in order to get Mark Beaks to take him to where "Project Tah-Dah" is only to find that it's a fake and that Mark Beaks secretly hired him. Mark Beaks survives the ordeal as Glomgold puts his plans together to dispose of Beaks.[45]

Della Duck - Della Duck is the mother of Huey, Dewey, and Louie, and Donald's twin sister. Prior to the events of the series, she used to go adventuring with her brother and uncle before Donald and Scrooge became estranged. She has disappeared by the time of the series, initially only appearing on photos and paintings, with Donald having raised the boys in her absence.[35] In the episode "The Great Dime Chase," it is revealed that she disappeared with relic called The Spear of Selene.[11] While the character had previously appeared in comics, this is her first appearance in any animated media.[46] She made her first major appearance within the franchise in issue #2 of the DuckTales comic book.[47]

Darkwing Duck - Darkwing Duck is a masked superhero from the city of St. Canard. Originally starring in his own 1991 series, with Launchpad McQuack as his sidekick, this is the first time he and Scrooge will interact in animation.[48]

Several additional members of the Clan McDuck and the Duck family are referred to in the pilot episode "Woo-oo!",[35] where their portraits and/or names appear as a part of Webby's research: Scrooge’s grandfather Dingus, his sisters Hortense (Donald's mother) and Matilda, and Donald's father Quackmore.

Flintheart Glomgold (voiced by Hal Smith in the 1987 series, Brian George in DuckTales: Remastered and Keith Ferguson in the 2017 series) is Scrooge's arch-rival, and the second-richest duck in the world. His first appearance in the series was in the second part of the pilot episode.[49] Glomgold often comes up with schemes to earn more money, often at Scrooge's expense, in order to surpass Scrooge and capture the title of World's Richest Duck. Early Barks sketches for Scrooge and Glomgold show remarkable similarities, especially in temperament. While the comics originally depicted Glomgold as a native of South Africa, his origin was changed to Scottish descent just like Scrooge. He made a cameo appearance in the Darkwing Duck episode "In Like Blunt", along with the Beagle Boys and Magica De Spell.[50]

In the 2017 series, debuting in the hourlong pilot episode "Woo-oo!",[35] he heads Glomgold Industries and makes his fortune through personal branding, preferring to develop his products as cheaply as possible.

Ma Beagle (voiced by June Foray in the 1987 series, Margo Martindale in the 2017 series) - Ma Beagle is the mother of the gang. Ma has more experience than her boys, and always takes charge when she is around. She is the leader of the Beagle Boys; Bigtime is her second-in-command. In the 2017 series, she debuts in the episode "Daytrip of Doom!".[51]

Bigtime Beagle (voiced by Frank Welker in the 1987 series, Eric Bauza in the 2017 series) - Bigtime Beagle is a short beagle with a lot of cunning. He is second-in-command of the Beagle Boys and leads when his Ma is not around. In the 2017 series, he debutes in the episode "Daytrip of Doom!",[51] and is the leader of the Original Classics.

Burger Beagle (voiced by Chuck McCann in the 1987 series, Eric Bauza in the 2017 series) - Burger Beagle is a dimwitted beagle who is constantly hungry. In the 2017 series, he debuts in the episode "Daytrip of Doom!",[51] and is a member of the Original Classics.

Bouncer Beagle (voiced by Chuck McCann in the 1987 series, Eric Bauza in the 2017 series) - Bouncer Beagle is a beagle who usually serves as a set of muscles for the group. In the 2017 series, he debutes in the episode "Daytrip of Doom!",[51] and is a member of the Original Classics.

Alongside Bigtime, Burger, and Bouncer, the 1987 series include four additional main Beagle Boys and some minor Beagle Boys:

Bankjob Beagle (voiced by Peter Cullen) - Bankjob is a burly beagle who runs the show when Bigtime or Ma are not around. Appears mainly in the first season, with a final (non-speaking) appearance in the five-part episode "Super DuckTales".[12]

Babyface Beagle (voiced by Terry McGovern) - Babyface Beagle is a small and clean-shaven beagle. Babyface dresses much like a little kid and wears a distinctive propeller beanie. Appears mainly in the first season, with a final (non-speaking) appearance in the five-part episode "Super DuckTales".[12]

Bugle Beagle (voiced by Brian Cummings) - Bugle Beagle is a lanky beagle with a passion for music (mostly jazz and disco). He is called Bebop in the episode "Scroogerello." Appears mainly in the first season, with a final (non-speaking) appearance in the five-part episode "Super DuckTales".[12]

Megabyte Beagle (voiced by Frank Welker[52]) - Megabyte Beagle is a minor Beagle Boy who is a technological genius and the only beagle boy relative whose name does not start with a "B". He appears in the "Super DuckTales" five-part episode.[12]

Bomber Beagle (voiced by Robert Ridgely) - Bomber Beagle is a minor Beagle Boy who is a relative intelligent beagle and a skilled pilot, appearing in the episode "Top Duck".[53]

Backwoods and Binky Beagle - Backwoods (voiced by Danny Mann) and Binky Beagle are minor Beagle Boys who are a trio of Canadian countryside Beagle Boys appearing in the episode "Ducky Mountain High".[23]

Bacon (voiced by Frank Welker) - Bacon is the pet pig of Backwoods and Binky.

The Beagle Babes – Boom-Boom (voiced by Victoria Carroll), Bouffant (voiced by Jo Anne Worley), and Babydoll (voiced by Susan Blu) are the female cousins of the Beagle Boys, appearing in the episode "The Good Muddahs".[54]

The Beagle Brats - The Beagle Brats are a younger version of the Beagle Boys (supposedly either their sons or nephews) and appears in the episode-segment "Take Me Out of the Ballgame".[37] The characters were created for the comic books in the 1960s

Several additional groups of Beagle Boys (all voiced by Eric Bauza) appear in the episode "The Beagle Birthday Massacre!":[43]

The Glam Yankees - A faction of the Beagle Boys that dress up as a combination of Colonial Yankees and musicians.

The Déjà Vus - A French faction of the Beagle Boys where they end up living up to their name.

The 6th Avenue Meanies - A trio of Beagle Boys who are thugs.

Bad Attitude - Member of the 6th Avenue Meanies.

The 6th Avenue Friendlies - A trio of Beagle Boys who have a friendly personality.

Benevolent - Member of the 6th Avenue Friendlies.

The Longboard Taquitos - A group of dardevil-themed Beagle Boys who speak in surfer accents.

The Tumblebums - A group of evil clown-themed Beagle Boys. There is a rumor about them that Ma Beagle adopted them.

The Ugly Failures - A trio of Beagle Boys who Ma sees as a disappointment to the family.

Botched Job - A large chubby member of the Ugly Failures who is shorter than Bouncer.

Bottle - A scraggy member of the Ugly Failures with crooked braced teeth who gets his name for constantly getting his fingers stuck in bottles.

Magica De Spell (voiced by June Foray in the 1987 series, Catherine Tate in the 2017 series) is a powerful sorceress who is constantly after Scrooge's Number One Dime. Magica is one of three top antagonists that Scrooge, his family and his friends face every time. Scrooge's coveted Number One Dime is thought to have magic powers, that Magica can use to rule the world with it.

In the 2017 series, she debuts as a sinister shadow trapped in Lena’s amulet in the episode "The Beagle Birthday Massacre!",[43] while making her first speaking appearance in "Terror of the Terra-firmians!".[55]

El Capitán (voiced by Jim Cummings) - El Capitán is a former captain who is insanely greedy for gold. He appeared in parts 1, 2, and 5 of the five-part pilot episode.[8][49][56] Hints are given that he is in fact a 400-year-old Spanish galleon captain who is kept alive solely by gold fever and his "sheer willpower".[56] Furthermore, he is even more of a greedy miser than Scrooge McDuck or even Flintheart Glomgold can ever be—he sinks his own raised treasure ship by accident to retrieve a single golden coin.[49]

Poe (voiced by Frank Welker) - Poe is Magica's brother and familiar. Poe was somehow transformed into a non-anthropomorphic raven, and cannot be turned back by conventional magic.

Pete (voiced by Will Ryan) - Pete is a classic Disney villain who appears in the first-season episodes "Pearl of Wisdom" (as Sharkey),[57] "Merit Time Adventure" (as Dogface Pete),[58] "Time Teasers" (as Captain Blackheart),[59] and "Duck in the Iron Mask" (as Captain Pietro),[60] Each of his appearances is notably a separate character, as they all have different experiences with Scrooge, and two of them belong in different time periods.

Merlock (voiced by Christopher Lloyd) - Merlock is a powerful and evil wolf sorcerer who uses a green talisman to transform into various (non-anthropomorphic) animals. He is the main villain in the film DuckTales the Movie: Treasure of the Lost Lamp, in which he sought to regain the lamp. In the film, it is revealed that he once possessed the magic lamp of Gene the genie and by combining it with the talisman he gained unlimited wishes including his own immortality, the sinking of Atlantis where it was a famous vacation resort that Merlock couldn't get a reservation for, the eruption of Mount Vesuvius that caused the destruction of Pompeii, and the invention of anchovy pizza. Near the end of the film, Merlock fell to his apparent death from thousands of feet in the air after being separated from his talisman in griffin form. Since the movie, Merlock has made appearances in other Disney media like Legend of Illusion Starring Mickey Mouse and Donald Duck: Goin Quackers.

Captain Peghook (voiced by Keith Ferguson) - Captain Peghook is an undead ghost pirate who once terrorized and plundered the River Styx. He appears in the two-part pilot, "Woo-oo!".[35]

Gabby McStabberson (voiced by Jennifer Hale) - Gabby McStabberson is a trained assassin who serves as Flintheart Glomgold's employee/henchwoman. She was raised by warrior monks who taught her "the ways of the blade". She appears in the two-part pilot, "Woo-oo!".[35]

Hack and Slash Smashnikov (voiced by Jason Marsden and Sam Riegel respectively) - Hack and Slash Smashnikov are twin wolves that serve as Flintheart Glomgold's employees/henchmen with Gabby McStabberson. Hack is the shorter of the duo wearing a green jacket and glasses, while Slash is the taller one with a black jacket, a scar on his face and black gloves, with both wearing helmets. They appear in the two-part pilot, "Woo-oo!".[35]

Toad Liu Hai (voiced by B. D. Wong) - Appearing in the episode "The House of the Lucky Gander!",[27] Toad Liu Hai is an ancient toad spirit of chance and fortune (based upon taoist deity Liu Haichan), who poses as the owner of The House of Lucky Fortune, a resort casino in Macaw. He has trapped Gladstone Gander in order to harvest his good luck. Toad Liu Hai was defeated when Scrooge tricked him into feeding off of Donald's luck.

Falcon Graves (voiced by Robin Atkin Downes) - Falcon Graves is a falcon who is the menacing industrial spy. He targeted Mark Beaks in the episode "The Infernal Internship of Mark Beaks!" in order to get to "Project Tah-Dah."[45]

Toth-Ra (voiced by Bassem Youssef) - Toth-Ra is an ancient, mummified pharaoh, whom the ducks awakes while exploring his pyramid in the episode "The Living Mummies of Toth-Ra!"[64]

The Terra-firmians - The Terra-firmians are a race of underground rolling creatures, created by Carl Barks for his comic story Land Beneath the Ground!. In the 1987 series, they are led by the unnamed Terra-firmian king (voiced by Frank Welker) and trigger earthquakes underneath the Money Bin in the episode "Earth Quack".[65] In the 2017 series, sceptic Huey and believer Webby debate their existence until running into some of them (voiced by Fred Tatasciore and Cree Summer) in Duckburg's old subway system as told in the episode "Terror of the Terra-firmians!".[55]

Webra Walters (voiced by Joan Gerber) - Webra Walters is a snooty reporter, heavily based on Barbara Walters. She is usually around when the script calls for a news reporter of some kind. She appeared in the episodes "Send in the Clones",[66] "A Case of Mistaken Secret Identity",[67] and "The Masked Mallard".[68] She later appeared in the Darkwing Duck episodes "Up, Up and Awry" and "The Quiverwing Quack".[17][69]

Benzino Gassolini (voiced by Gino Conforti[52]) - Benzino Gassolini is an Italian playboy who can prepare pizza while flying a plane. He appears in the episodes "Hotel Strangeduck"[70] and "Top Duck".[53]

Captain Farley Foghorn (voiced by Casey Kasem) - Captain Farley Foghorn is a goofy captain who works for "Temp Cap" ("Temporary Captain Service") and who is occasionally hired by Scrooge McDuck. He appears in the episodes "Bermuda Triangle Tangle"[71] and "The Uncrashable Hindentanic".[72]

The Grand Kishke (voiced by Hamilton Camp) - The Grand Kishke is the ruler of the country of Macaroon, who discovered a rare glowing fruit, and who appears in the first and fourth parts of the serial "Catch as Cash Can".[73][74]

Oprah Webfeet (voiced by Tress MacNeille) - Oprah Webfeet is a talk show host and obvious parody of Oprah Winfrey who appears in the episodes "The Big Flub"[40] and "A Case of Mistaken Secret Identity".[67] A similar character named Opal Windbag appears in the Darkwing Duck episodes "Twitching Channels" and "Dead Duck".[75][76]

Dr. Von Swine (voiced by Howard Morris) - Dr. Von Swine is a psychiatrist with a private practice in Duckburg. He appears in the episodes "Yuppy Ducks"[31] and "Attack of the Fifty-Foot Webby".[77]

Walter Cronduck (voiced by Frank Welker) - Walter Cronduck is a newsreporter, based on Walter Cronkite. He appears in the episodes "Allowance Day",[78] "Attack of the Metal Mites",[61] and "New Gizmo-Kids on the Block".[79]

Genie (voiced by Rip Taylor) - This unnamed genie is featured in DuckTales the Movie: Treasure of the Lost Lamp where he was targeted by Merlock. He ends up becoming a real boy and a very good friend of the children. This Genie is not to be confused with Djinni from the episode "Master of the Djinni".

Poupon (voiced by Frank Welker) - Poupon is a member of The Brotherhood of the Goose, protectors of the ancient Golden Gose artifact. He is Dijon's brother, and appears in the two part series finale.[62][63] Like his brother, he shares his name with a type of French mustard.

Vacation Van Honk - Vacation Van Honk is a background (non-speaking) character who dresses much like a tourist. He appears sporadically during the first season.[1]

Quacky McSlant - Quacky McSlant is another background (non-speaking) character appearing throughout season 1. Quacky sports a tilted body, and sometimes wears a sweater with a Q on it.[1]

A tough but innocent prison inmate of Aquatraz who befriends the likewise falsely covicted Scrooge in jail. They share a mutual enemy in Flintheart Glomgold due to the fact that he has framed them. Both of them are released when Huey, Dewey, and Louie prove their innocence.

A high-ranking agent of F.O.W.L. (the "Foreign Organization for World Larceny") who plots to destroy all the money in the world. F.O.W.L. later recurred on Darkwing Duck, in which the "F" stands for "Fiendish"[97]